Without Graphing the Function, Determine Its Amplitude or Period as Requested

Multiple Choice

Without graphing the function, determine its amplitude or period as requested.
- $y = 5 \sin \frac { 1 } { 4 } x \quad$ Find the amplitude.

A) 2
B) $6 \pi$
C) $\frac { \pi } { 2 }$
D) $\frac { 2 \pi } { 3 }$